Two conservation organizations plan to sue the Flathead National Forest, arguing a new forest management plan fails to protect threatened and endangered species in the northern Rocky Mountains. “The plan allows a huge amount of new road building to the detriment of grizzly bears and bull trout,” said Earthjustice attorney Josh Purtle, who represents Swan View Coalition and Friends of the Wild Swan. “It essentially says we’re going to change the requirements where you can build a road and how many miles you can build while maintaining the 2011 habitat conditions to protect grizzlies. But the plan doesn’t actually do that.” The two groups filed their notice of intent to sue in federal court on Friday. Proceedings may begin in 60 days. The 2,000-page Flathead Forest Plan guides how Flathead National Forest staff direct projects and value resources on 2.4 million acres of public land.